<template>
	<view class="content">
		<view class="navbar">
			<view 
				v-for="(item, index) in navList" :key="index" 
				class="nav-item" 
				:class="{current: tabCurrentIndex === index}"
				@click="tabClick(index)"
			>
				{{item.text}}
			</view>
		</view>

		<swiper :current="tabCurrentIndex" class="swiper-box" duration="300" @change="changeTab">
			<swiper-item class="tab-content" v-for="(tabItem,tabIndex) in navList" :key="tabIndex">
				<scroll-view 
					class="list-scroll-content" 
					scroll-y
					@scrolltolower="loadData"
				>
					<!-- 空白页 没有数据 -->
					<empty v-if="tabItem.loaded === true && tabItem.orderList.length === 0"></empty>
					
					<!-- 订单列表 -->
					<view 
						v-for="(item,index) in tabItem.orderList" :key="index"
						class="order-item"
					>
						<view class="i-top b-b">
							<text class="time">{{item.create_time | filterDate}}</text>
							<text class="state" :style="{color: item.statusTipColor}">{{item.statusTip}}</text>
							<text 
								v-if="item.status === 1 || item.status === 4" 
								class="del-btn yticon icon-iconfontshanchu1"
								@click="deleteOrder(index)"
							></text>
						</view>
						<!-- 商品列表 -->
						<block v-for="(goods,goodsIndex) in item.productItemList" :key="goodsIndex">
							<view class="goods-box-single" @click="orderDetail(item._id)">
								<image class="goods-img" :src="goods.primary_img" mode="aspectFill"></image>
								<view class="right">
									<text class="title clamp">{{goods.product_name}}</text>
									<text class="attr-box">{{goods.sale_unit || ''}}  x {{goods.num}}</text>
									<text class="price">{{goods.book_price}}</text>
								</view>
							</view>
						</block>
						
						<view class="price-box">
							共
							<text class="num">{{ item.productNum }}</text>
							件商品 实付款
							<text class="price">{{ item.totalPrice }}</text>
						</view>
						<view class="action-box b-t" v-if="item.status === 0">
							<button class="action-btn" @click="cancelOrder(item)">取消订单</button>
							<button class="action-btn recom" @click="buy(item)">立即支付</button>
						</view>
					</view>
					 
					<uni-load-more :status="tabItem.loadingType"></uni-load-more>
					
				</scroll-view>
			</swiper-item>
		</swiper>
		
		<!-- 未登录 提示 -->
		<zt-modal
			v-if="!isLogin"
			info="更多精彩,请先登录!"
			cancelText="取消"
			@clickRight="clickRight"
			@clickLeft="clickLeft"
		>
			<template v-slot:right>
				<button open-type="getUserInfo" style="background: #fa436a;" type="primary">微信登录</button>
			</template>
		</zt-modal>
	</view>
</template> 

<script>
	import filterTime from "@/common/filterTime.js"
	import { updateOrderStatus,getOrderList } from "@/common/request.js"
	import { mapState,mapMutations } from "vuex"
	import uniLoadMore from '@/components/uni-load-more/uni-load-more.vue';
	import empty from "@/components/empty";
	import Json from '@/Json';
	export default {
		components: {
			uniLoadMore,
			empty
		},
		data() {
			return {
				tabCurrentIndex: 0,
				isLogin:false,
				navList: [{
						state: 0,
						text: '全部',
						loadingType: 'more',
						orderList: []
					},
					{
						state: 1,
						text: '待付款',
						loadingType: 'more',
						orderList: []
					},
					{
						state: 2,
						text: '待收货',
						loadingType: 'more',
						orderList: []
					}
				],
			};
		},
		computed:{
			...mapState(['hasLogin','token'])
		},
		onShow() {
			
		},
		onLoad(options){
			this.isLogin = this.hasLogin;
			this.tabCurrentIndex = parseInt(options.state); //当前swiper
			if(this.isLogin){
				if(parseInt(options.state) === 0){  //默认加载全部
					this.loadData()
				}
			}
			
		},
		filters:{
			// 格式化时间
			filterDate(val){
				let d = filterTime(val)
				return d;
			}
		},
		methods: {
			...mapMutations(['login','openid']),
			clickRight(){
				this.isLogin = true;
				uni.getUserInfo({
					provider:"weixin",
					success:(user) => {
						this.$loginMP().then(res=>{
							let data = {
								token:res.result.token,
								openid:res.result.openid,
								userInfo:user.userInfo
							}
							this.login(data)
							this.loadData()
						}).catch(err=>{
							uni.showModal({
								title: "提示",
								content: '稍后重试'+err.message,
								showCancel: false,
							});
						})
					}
				})
			},
			clickLeft(){
				uni.navigateBack({
					delta:1
				})
			},
			//订单详情
			orderDetail(id){
				uni.navigateTo({
					url:`../orderdetail/orderdetail?id=${id}`
				})
			},
			//获取订单列表
			async loadData(source){
				let index = this.tabCurrentIndex; //当前页
				let navItem = this.navList[index]; //当前item
				let state = navItem.state; //当前页的规定码
				let status = index === 0 ? "" : index-1; // 0 待付款，1待收货
				// console.log(status);
				if(source === 'tabChange' && navItem.loaded === true){
					//tab切换只有第一次需要加载数据
					return;
				}
				if(navItem.loadingType === 'loading'){
					//防止重复加载
					return;
				}
				
				navItem.loadingType = 'loading';
				
				let res = await getOrderList({
					data:{status}
				})
				
				if(res.code === 0){
					// console.log(res);
					let orderList = res.data.filter(item=>{
						// 判断状态 订单状态，0 待付款 1 已取消 2 到付 3 已支付 4 已完成
						item = Object.assign( item, this.orderStateExp(item.status) );
						
						let total = 0;
						let productNum = 0;
						item.productItemList.forEach(goods=>{
							total = this.$math.accAdd(total,this.$math.accMul(goods.book_price,goods.num)) //总价
							productNum += goods.num;
						})
						item.totalPrice = Number(total.toFixed(2)) // 用代购价格计算
						item.productNum = productNum; //数量
						return item;
					});
					orderList.forEach(item=>{
						navItem.orderList.push(item);
					})
					
					//loaded新字段用于表示数据加载完毕，如果为空可以显示空白页
					this.$set(navItem, 'loaded', true);
					
					//判断是否还有数据， 有改为 more， 没有改为noMore
					if(res.data.length <= 0){
						navItem.loadingType = 'noMore';
					} else {
						navItem.loadingType = 'more';
					}
					
				}
			}, 

			//swiper 切换
			changeTab(e){
				// console.log("ok");
				if(!this.isLogin){
					return false;
				}
				this.tabCurrentIndex = e.target.current;
				this.loadData('tabChange');
			},
			//顶部tab点击
			tabClick(index){
				this.tabCurrentIndex = index;
			},
			//删除订单
			deleteOrder(index){
				uni.showLoading({
					title: '请稍后'
				})
				setTimeout(()=>{
					this.navList[this.tabCurrentIndex].orderList.splice(index, 1);
					uni.hideLoading();
				}, 600)
			},
			//取消订单
			async cancelOrder(item){
				
				let res = await updateOrderStatus({
					data:{
						id:item._id,
						status:1
					}
				})
				
				if(res.code === 0){
					uni.showToast({
						title: '订单已取消'
					});
					//更新本地数据
					let {statusTip, statusTipColor} = this.orderStateExp(1);
					item = Object.assign(item, {
						status: 1,
						statusTip, 
						statusTipColor
					})
					
					//取消订单后删除待付款中该项
					let list = this.navList[1].orderList;
					let index = list.findIndex(val=>val._id === item._id);
					index !== -1 && list.splice(index, 1);
					
				}
			},
			//购买
			buy(item){
				let orderPay = {
					totalPrice:item.totalPrice,
					id:item._id
				}
				uni.navigateTo({
					url:`../money/pay?orderPay=${encodeURIComponent(JSON.stringify(orderPay))}`
				})
			},
			//订单状态文字和颜色  订单状态，0 待付款 1 已取消 2 到付 3 已支付 4 已完成
			orderStateExp(status){
				let statusTip = '',
					statusTipColor = '#fa436a';
				switch(status){
					case 0:
						statusTip = '待付款'; break;
					case 1:
						statusTip = '订单已取消';
						statusTipColor = '#909399';
						break;
					case 2:
						statusTip = '货到付款'; break;
					case 3:
						statusTip = '订单已支付'; break;
					case 4:
						statusTip = '订单已完成'; 
						statusTipColor = '#909399';
						break;	
					//更多自定义
				}
				return {statusTip, statusTipColor};
			}
		},
	}
</script>

<style lang="scss">
	page, .content{
		background: $page-color-base;
		height: 100%;
	}
	
	.swiper-box{
		height: calc(100% - 40px);
	}
	.list-scroll-content{
		height: 100%;
	}
	
	.navbar{
		display: flex;
		height: 40px;
		padding: 0 5px;
		background: #fff;
		box-shadow: 0 1px 5px rgba(0,0,0,.06);
		position: relative;
		z-index: 10;
		.nav-item{
			flex: 1;
			display: flex;
			justify-content: center;
			align-items: center;
			height: 100%;
			font-size: 15px;
			color: $font-color-dark;
			position: relative;
			&.current{
				color: $base-color;
				&:after{
					content: '';
					position: absolute;
					left: 50%;
					bottom: 0;
					transform: translateX(-50%);
					width: 44px;
					height: 0;
					border-bottom: 2px solid $base-color;
				}
			}
		}
	}

	.uni-swiper-item{
		height: auto;
	}
	.order-item{
		display: flex;
		flex-direction: column;
		padding-left: 30upx;
		background: #fff;
		margin-top: 16upx;
		.i-top{
			display: flex;
			align-items: center;
			height: 80upx;
			padding-right:30upx;
			font-size: $font-base;
			color: $font-color-dark;
			position: relative;
			.time{
				flex: 1;
			}
			.state{
				color: $base-color;
			}
			.del-btn{
				padding: 10upx 0 10upx 36upx;
				font-size: $font-lg;
				color: $font-color-light;
				position: relative;
				&:after{
					content: '';
					width: 0;
					height: 30upx;
					border-left: 1px solid $border-color-dark;
					position: absolute;
					left: 20upx;
					top: 50%;
					transform: translateY(-50%);
				}
			}
		}
		/* 多条商品 */
		.goods-box{
			height: 160upx;
			padding: 20upx 0;
			white-space: nowrap;
			.goods-item{
				width: 120upx;
				height: 120upx;
				display: inline-block;
				margin-right: 24upx;
			}
			.goods-img{
				display: block;
				width: 100%;
				height: 100%;
			}
		}
		/* 单条商品 */
		.goods-box-single{
			display: flex;
			padding: 20upx 0;
			.goods-img{
				display: block;
				width: 120upx;
				height: 120upx;
			}
			.right{
				flex: 1;
				display: flex;
				flex-direction: column;
				padding: 0 30upx 0 24upx;
				overflow: hidden;
				.title{
					font-size: $font-base + 2upx;
					color: $font-color-dark;
					line-height: 1;
				}
				.attr-box{
					font-size: $font-sm + 2upx;
					color: $font-color-light;
					padding: 10upx 12upx;
				}
				.price{
					font-size: $font-base + 2upx;
					color: $font-color-dark;
					&:before{
						content: '￥';
						font-size: $font-sm;
						margin: 0 2upx 0 8upx;
					}
				}
			}
		}
		
		.price-box{
			display: flex;
			justify-content: flex-end;
			align-items: baseline;
			padding: 20upx 30upx;
			font-size: $font-sm + 2upx;
			color: $font-color-light;
			.num{
				margin: 0 8upx;
				color: $font-color-dark;
			}
			.price{
				font-size: $font-lg;
				color: $font-color-dark;
				&:before{
					content: '￥';
					font-size: $font-sm;
					margin: 0 2upx 0 8upx;
				}
			}
		}
		.action-box{
			display: flex;
			justify-content: flex-end;
			align-items: center;
			height: 100upx;
			position: relative;
			padding-right: 30upx;
		}
		.action-btn{
			width: 160upx;
			height: 60upx;
			margin: 0;
			margin-left: 24upx;
			padding: 0;
			text-align: center;
			line-height: 60upx;
			font-size: $font-sm + 2upx;
			color: $font-color-dark;
			background: #fff;
			border-radius: 100px;
			&:after{
				border-radius: 100px;
			}
			&.recom{
				background: #fff9f9;
				color: $base-color;
				&:after{
					border-color: #f7bcc8;
				}
			}
		}
	}
	
	
	/* load-more */
	.uni-load-more {
		display: flex;
		flex-direction: row;
		height: 80upx;
		align-items: center;
		justify-content: center
	}
	
	.uni-load-more__text {
		font-size: 28upx;
		color: #999
	}
	
	.uni-load-more__img {
		height: 24px;
		width: 24px;
		margin-right: 10px
	}
	
	.uni-load-more__img>view {
		position: absolute
	}
	
	.uni-load-more__img>view view {
		width: 6px;
		height: 2px;
		border-top-left-radius: 1px;
		border-bottom-left-radius: 1px;
		background: #999;
		position: absolute;
		opacity: .2;
		transform-origin: 50%;
		animation: load 1.56s ease infinite
	}
	
	.uni-load-more__img>view view:nth-child(1) {
		transform: rotate(90deg);
		top: 2px;
		left: 9px
	}
	
	.uni-load-more__img>view view:nth-child(2) {
		transform: rotate(180deg);
		top: 11px;
		right: 0
	}
	
	.uni-load-more__img>view view:nth-child(3) {
		transform: rotate(270deg);
		bottom: 2px;
		left: 9px
	}
	
	.uni-load-more__img>view view:nth-child(4) {
		top: 11px;
		left: 0
	}
	
	.load1,
	.load2,
	.load3 {
		height: 24px;
		width: 24px
	}
	
	.load2 {
		transform: rotate(30deg)
	}
	
	.load3 {
		transform: rotate(60deg)
	}
	
	.load1 view:nth-child(1) {
		animation-delay: 0s
	}
	
	.load2 view:nth-child(1) {
		animation-delay: .13s
	}
	
	.load3 view:nth-child(1) {
		animation-delay: .26s
	}
	
	.load1 view:nth-child(2) {
		animation-delay: .39s
	}
	
	.load2 view:nth-child(2) {
		animation-delay: .52s
	}
	
	.load3 view:nth-child(2) {
		animation-delay: .65s
	}
	
	.load1 view:nth-child(3) {
		animation-delay: .78s
	}
	
	.load2 view:nth-child(3) {
		animation-delay: .91s
	}
	
	.load3 view:nth-child(3) {
		animation-delay: 1.04s
	}
	
	.load1 view:nth-child(4) {
		animation-delay: 1.17s
	}
	
	.load2 view:nth-child(4) {
		animation-delay: 1.3s
	}
	
	.load3 view:nth-child(4) {
		animation-delay: 1.43s
	}
	
	@-webkit-keyframes load {
		0% {
			opacity: 1
		}
	
		100% {
			opacity: .2
		}
	}
</style>
